Conferences

2018

Mangani, T.R., Naudé, J.P., Sebitloane, T.K.J., Kellner, K. & Malan, P.W.  Brush packing as a restoration technology after bush control: Preliminary results.  Poster presented at the 6th Annual LaRSSA (Land Rehabilitation Society of SA) Conference at the Champagne Sports Resort, Drakensberg, South Africa.  13-16 August.

Kellner, K., Kruger, C.A. & van Deventer, P.W.   Evaluation of coated and uncoated seed for the rehabilitation of gold mine tailings.  Poster presented at the 6th Annual LaRSSA (Land Rehabilitation Society of SA) Conference at the Champagne Sports Resort, Drakensberg, South Africa.  13-16 August.

Keulder, C.J., Kellner, K. & van Deventer P.W.   The salt tolerance of four Cynodon dactylon ecotypes used for rehabilitation of mine tailings.  Poster presented at the 6th Annual LaRSSA (Land Rehabilitation Society of SA) Conference at the Champagne Sports Resort, Drakensberg, South Africa.  13-16 August.

2017

Meyer, H., Authmann, C., Dreber, N., Hess, B., Kellner, K., Morgenthal, T., Nauss, T., Seeger, B. & Wiegand, K.   IDESSA: an integrative decision support system for sustainable rangeland management in Southern African Savannas.  Poster presented at the general assembly of the EGU, Vienna, Austria, 23–28 April.

2016

Kruger, A., Kellner, K. & Van Deventer, P.W.   The evaluation of four coated and non-coated grasses for the revegetation of gold and platinum tailings..Poster presented at the 4th annual congress of LaRSSA (Land Rehabilitation Society of SA) Kimberley, South Africa, 13–16 September.

Tautè, H., Kellner, K. & Van Deventer, P.W.   The evaluation of five coated and non-coated grass species for the rehabilitation of Gold mine tailings in South Africa.  Poster presented at the 4th annual congress of LaRSSA (Land Rehabilitation Society of SA) Kimberley, South Africa, 13–16 September.

Kellner, K. & Tautè, H.   Control of bush encroachment in Limpopo and North West Province: a collaboration between the DEA and North-West University.  Presentation delivered at Member of MAREP (Management, Research and Planning) meeting in Pretoria, South Africa, 13 October.

Kellner, K. 2016. Module 2.1: The context of land degradation and principles of restouration. Presentation delivered at the Centre of Environment Management (CEM), Potchefstroom, South Africa, 26–28 September 2016.

2015

Kellner, K., Harmse, C.J., Fouche, J.H. & Pelser, J.J.   Restoration of degraded arid- and semi-arid Savannas in South Africa.  Presentation at SER Europe conference, Freising, Germany, 22–25 August.

Kellner, K., Nel, L., Truter, W.F. & Van Deventer, P.   The emergency and survival of Digitaria Eriantha and Chloris gayana seedlings on mine tailings planted with coated and non-coated seed. National LaRSSA conference, Krugersdorp, South Africa. (poster).

Harmse, C.J., Dreber, N. and Kellner, K.   Calibrating a disc pasture meter to estimate grass dry matter production in arid dunefield vegetation of the southern Kalahari.  Poster presented at the Arid Zone Ecology Forum (AZEF), Springbok, South Africa, 5–8th October.

2014

Kellner, K., Harmse, C., Van Rooyen, S., Fouche, J.H. & Dreber, N. A comparative assessment and evaluation of chemical bush control actions in the Molopo savanna responses in vegetation and landscape functionality.  Bush encroachment workshop presented for IDESSA, Potchefstroom, South Africa, 26 June.

Kellner, K.   Restoration projects in the semi-arid savannas of South Africa.  Group seminar at the Department of Ecosystem Modelling, Georg-August University, Goettingen, Germany, 12 May.

Taute, H., Kellner K. & Van Deventer, P. W.  The evaluation of five coated and non-coated grass species for the rehabilitation of two gold and one platinum mine tailings in South Africa: Preliminary results.  Presented at the 3rd annual LaRSSA conference, Muldersdrift, South Africa, 8–11 September.

Muller, I., Van Deventer, P.W. & Kellner, K.  Viability of seed produced by five native grasses grown in mine waste: a pot trial. Presented at the 3rd annual LaRSSA conference, Muldersdrift, South Africa, 8–11 September.

Nel, L., Coetzee, D., Truter, W., Pretorius, J., Kellner, K., Van Deventer, P.W., Muller, I. & Brits, Y.  The value of coated Eragrostis Curvula (weeping love grass) seed used for rehabilitation Presented at the 3rd annual LaRSSA conference, Muldersdrift, South Africa, 8–11 September.

Van Rooyen, S., Kellner, K. and Dreber, N.  Short‐term structural responses of woody savanna vegetation to non‐selective chemical bush control, South Africa.  Paper presented at the 45th annual Gfö meeting, Göttingen, Germany, 31 August–4 September.

Bastian, H., Hanss, S., Wiegand, K., Kellner, K., Morgenthal, T., Van Rooyen, A.F. & Jordaan, F.  Predicting savanna dynamics in response to management and climate change: a modelling approach for decision support Paper presented at the 45th annual Gfö meeting, Göttingen, Germany, 31 August–4 September.

Kellner, K. & Dreber, N.  IDESSA – sub project 2: management and restoration.  Presented at SPACES workshop (Science Partnership for the assessment of Complex Earth System Processes), Cape Town, South Africa, 3–4 November.

Fouche, J.H., Kellner,K., Dreber, N. & Tongway, D.  A comparative assessment of landscape function in bush encroached and -controlled savanna rangelands.  Presented at SPACES workshop (Science Partnership for the assessment of Complex Earth System Processes), Cape Town, South Africa, 3–4 November.

Attended the NRMP MAREP meeting, Cape Town, South Africa, 13–15 October 2015.

Attended the SADC United Nations Convention to Combat Desertification (UNCCD), Pretoria, South Africa, 28–30 August 2015.

Attended the national stakeholder consultation meeting for the UNCCD COP, Pretoria, South Africa, 12–19 June 2015.

Attended the 3rd UNCCD Conference of the Science-Policy Interface (SPI) and the 4th special session of the Committee on Science and Technology (CST S-4), Cancun, Mexico, 7–12 March 2015.

Attended the 12th session of the UNCCD COP meeting of the Committee on Science and Technology (CST12) and the meeting of the Science-Policy Interface (SPI), Ankara, Turkey, 12–17 October 2015.

Attended the IPBES Science-Policy and Nature second author meeting for Deliverable 3c: Methodological assessment of scenarios and modelling of biodiversity and ecosystem services, Ushuaia, Argentina, 9–13 March 2015.

2014

Kellner, K.   Rangeland ecology in South Africa:  legislation, management and monitoring. Paper presented at Botswana national rangeland management conference: improving rangeland management in Kgalagadi district, Gaborone, Botswana, 27 May.

Kellner, K., Kong, T.M., Harmse, C.J. & Dreber, N.   Indicators to evaluate restoration and management practices in some farming communities in the semi-arid savanna of the Molopo and Mier Regions of South Africa: Land users’ perceptions.  Paper presented at the 49th annual congress of the Grassland Society of Southern Africa (GSSA), Bloemfontein, South Africa, 20–25 July.

Mokgosi, R.O., Kellner, K. & Malan, P.W.   Impacts of land management and restoration practices on the ecosystem services after the control of woody plants in the Taung Area, North West Province.  Paper presented at the 49th annual congress of the Grassland Society of Southern Africa (GSSA), Bloemfontein, South Africa, 20–25 July.

Fouché, J.H. & Kellner, K.   The evaluation of three herbicides used to control Serephium Plumosum and their effect on the surrounding grass species.  Paper delivered at Arid Zone Ecology Forum (AZEF): Thicket FusionForum, Rhodes University, Grahamstown, South Africa, 8–11 September.

Pelser, J.J., Kellner, K. & Tongway, D.   Comparison of the functional status of bush thickened and controlled rangelands in the Molopo savanna of South Africa using landscape functional analysis.  Paper delivered at Arid Zone Ecology Forum (AZEF): Thicket FusionForum, Rhodes University, Grahamstown, South Africa, 8–11 September.

Van Rooyen, S.E. & Kellner, K.   Comparison of bush thickened and chemically controlled savannas in the Molopo district, North-West Province, South Africa.  Paper delivered at Arid Zone Ecology Forum (AZEF): Thicket FusionForum, Rhodes University, Grahamstown, South Africa, 8–11 September.

Mokgosi, R.O., Kellner, K. & Malan, P.W.   The effects of restoration practices on ecosystem services after bush control in Magogong communal area, Taung, North West Province.  Paper delivered at Arid Zone Ecology Forum (AZEF): Thicket FusionForum, Rhodes University, Grahamstown, South Africa, 8–11 September.

Dreber, N., Harmse, C.J. & Kellner, K.  Effects of bush thickening and chemical control on grass assemblages in a South African savanna.  Paper presented at the 44th annual meeting of the Ecological Society of Germany, Austria and Switzerland: Integrating ecological knowledge into nature conservation and ecosystem management, Hildesheim, Germany, 8–12 September.

Muller, I.; Van Deventer, P.W. & Kellner, K.   Viability of seed produced by five native grasses grown in mine waste: a pot trial.  Paper presented at the 2nd annual LaRSSA conference (Land Rehabilitation Society of Southern Africa), Muldersdrift, South Africa, 9–12 September.

Muller, I, Van Deventer, P.W. & Kellner, K.  Germination of coated seed from three grass species in different mine wastes for phytostabilisation.  International Phytotechnology Conference, Heraklion, Crete, Greece , 30 September–3 October.

Fouché, J.H., Jordaan, F. & Kellner, K.  The invasive species of South Africa and problem plants of South Africa.  Dow AgroSciences Conference, Parys, South Africa, 7 October.

Pelser, J.J. & Kellner, K. Evaluation of the selected restoration technologies in semi-arid savannas, Mokala National Park, South Africa.  Paper presented at the 11th Annual Kimberley Biodiversity Research Symposium (KBRS), Kimberley, South Africa, 22 October.

Kellner, K.  The challenges of bush encroachment in the northern provinces of the country.  Paper presented at the DEA National Conference on sciences and natural resources. Waenhuiskrans, South Africa, 4–6 November.

Attended the Climate change adaptation monitoring and evaluation indicators workshop, Johannesburg, South Africa, 13 February 2014.

Attended the CSIR and WRC workshop on Charting the future of restoration science and practice in South Africa, Stellenbosch, South Africa, 26 February 2014.

2013

Kellner, K., Kong, T, Harmse, C, & Dreber, N.   Indicators to evaluate restoration and management practices in two farming communities in arid to semi-arid savannas of South Africa: Land users’ perceptions. Paper presented at the 5th World Conference on Ecological Restoration, Madison, USA, 6–11 October.

Nel, L., Truter, W.F., Van Deventer, P. & Kellner, K.  The emergence and survival of Digitaria eriantha and Chloris gayana seedlings on mine tailings planted with coated and non-coated seed.  Paper presented at the 22nd International Grassland Congress, Sydney, Australia. 15–19 September.

Harmse, C.J., Dreber, N., Kellner, K. & Kong, T.M.   Linking farmer knowledge and biophysical data to evaluate actions for land degradation mitigation in savanna rangelands of the Molopo, South Africa.  Poster presented at the 22nd International Grasslands Congress, Sydney, Australia, 15–19 September.

Dreber, N., Orr, B., Kellner, K. & Bautista, S.  The PRACTICE approach: an integrated global perspective for combating land degradation in drylands.Paper presented at the 43rd Annual Meeting of the Ecological Society of Germany, Austria and Switzerland, Potsdam, Germany, 9–13 September.

Dreber, N., Harmse, C., Goetze, A.R., Trollope, W.S.W. & Kellner, K.  A comparison of two adapted point-centred quarter methods (APCQM) to estimate density and productivity of the woody layer in semi-arid savannas. Paper presented at the Arid Zone Ecology Forum, Kimberley, South Africa, 3–5 September.

Reynolds, D., Dreber, N., Kellner, K. & Harmse, C.  The effect of bush encroachment and related mitigation actions on grass abundance and diversity patterns – preliminary results. Paper presented at the Arid Zone Ecology Forum, Kimberley, South Africa, 3–5 September.

Harmse, C.J., Dreber, N., and Kellner, K.  Bush encroachment and related mitigation actions in the Molopo savanna of South Africa: implications for grass composition, forage production and grazing capacity. Paper presented at the Arid Zone Ecology Forum, Kimberley, South Africa, 3–5 September. (Winner first price for best student presentation).

Dreber, N., Kong, T.M., Kellner, K., Van Eeden, A. & Ocampo-Melgar, A.   Towards improved decision-making in degraded dry lands of southern Africa:  an indicator based assessment for integrated evaluation of restoration and management actions in the Kalahari rangelands.  Paper presented at the UNCCD 2nd Scientific Conference, Bonn, Germany, 9–12 April.

Kellner, K. & Harmse, C.J.  Role of WOCAT in UNCCD: potentials and constraints in South Africa.  Paper presented at the 16th WOCAT international workshop and steering meeting, Pretoria, South Africa, 27 May–1 June.

Kellner, K.  Restoration of degraded arid- and semi-arid rangelands in Southern Africa. Paper presented at the 3rd MC/WG Meeting and Mini-Conference on ‘Desert Restoration Bites’.  London, United Kingdom, 8–9 January.

Kellner, K. Indicators to evaluate restoration and management practices in two farming communities in arid to semi-arid savannas of South Africa:  Land user’s perceptions.  Poster presented at the SER 5th World Conference on Ecological Restoration: reflections of the past, Directions for the future.  Madison, Wisconsin, USA, 6–11 October.

Kellner, K. & Dreber, N.  Synergies between UNCCD, UNFCCC and CBD. (In Low, P.S. ed., Economic and social impacts of desertification, land degradation and drought. White Paper I: UNCCD 2nd Scientific Conference, Bonn, Germany, 9–12 April).

2012

Van Rooyen, L., Nortje, J.P., De Meyer, A., Kellner, K & Jordaan, A.  Evaluering van die kieming en vestiging van drie geselekteerde omhulde grasspesies in drie grondtipes vir rehabilitasie.  Voordrag gelewer by die Akademie Kongres: Afdeling Biologie, Potchefstroom, Suid Afrika, 5 Oktober.

Van Eeden, A.J. & Kellner, K.   The impacts of land degradation and restoration actions on the vegetation dynamics in the Mier district of the Northern Cape, South Africa.  Paper presented at the 47th Annual Congress of the Grassland Society of Southern Africa (GSSA), Langebaan, South Africa, 16–20 July.

Kellner, K. & Jordaan, F.P.  Monitoring and evaluation in land care projects.  Paper presented at the 5th Biennial Landcare Conference, Mahikeng, South Africa, 1–4 October.

Harmse, C.J., Kellner, K., Van Eeden, A. & Dreber, N.  Identifying the best restoration actions to combat land degradation in semi-arid savannas of Southern Africa: a participatory approach with local land users.  Paper presented at the 5th Biennial Landcare Conference, Mahikeng, South Africa, 1–4 October.

Van der Walt L., Cilliers S.S., Kellner K. & Du Toit M.J.  Landscape functionality and plant diversity in urban and rural grassland fragments in the Tlokwe municipality area.  Paper presented at the 38th Annual Congress of the South African Association of Botanists (SAAB), University of Pretoria, Pretoria, South Africa, 15–18 January.

Harmse, C.J. & Kellner, K.  Vegetation dynamics to assess restoration actions to combat land degradation in the semi-arid rangeland savannas of the Molopo in the North West Province, South Africa.  Paper presented at the 47th Annual Congress of the Grassland Society of Southern Africa (GSSA), Langebaan, South Africa, 16–20 July.

Kellner, K., van Eeden, A. & Harmse, C.J.  The evaluation of restoration actions to combat land degradation and desertification in the Kalahari region, South Africa.  Paper presented at the 4th International Conference on Drylands, Deserts and Desertification, Sede Boqer Campus of Ben-Gurion University, Israel, 12–15 November.

Kellner, K. & Kong, T. 2012. IAPro test in South Africa – to develop and test an integrated and participatory environmental evaluation protocol.  Paper presented at the 4th Plenary coordination meeting and 2nd Participatory assessment and knowledge transfer workshop, Mier, South Africa, 3–10 June.

2011

Van der Walt, L., Cilliers, S. S. & Kellner, K.  Landscape functionality of plant communities in the Impala Platinum mining area, Rustenburg.  Paper presented at the South African Association of Botanist (SAAB), Grahamstad, South Africa, 17 January.

Lamprecht, A.J.H., Cilliers, S.S., Kellner, K. & Götze, A.R.  Vegetation as the basis for establishment of a conservation plan for the Impala Platinum mining area, Rustenburg.  Paper presented at the South African Association of Botanist (SAAB), Grahamstad, South Africa, 17 January.

Kellner, K., Van Den Berg, L., Van Rooyen, A. & Wepener, J.P.   Rehabilitation technologies to combat land degradation and desertification in arid- and semi-arid rangelands of South Africa.  Paper presented at the 9th International Rangeland Congress: diverse rangelands for a sustainable society (IRC2011), Rosario, Argentina, 2–8 April.

Kellner, K., Wiegand, K., Hanss, S. & Morgenthal, T. Semi-arid savanna rangeland degradation and management: a landscape scale model.  Paper presented at the 9th International Rangeland Congress: diverse rangelands for a sustainable society (IRC2011), Rosario, Argentina, 2–8 April.

Kellner, K., Burgess, R., Bosoga, L. & Khwene, M.  The Kalahari-Namib Project – enhancing decision making through interactive learning and action in the Molopo-Nossop river basin: a collaborative project between South Africa, Namibia and Botswana.  Paper presented at the 40th Annual Congress of the Grassland Society of Southern Africa (GSSA), Grootfontein Agricultural Development Institute, Middelburg, Eastern Cape, South Africa, 11–15 July.

Kellner, K., Kong, T., Els, Y. & Coetzee, H.  Local knowledge and perceptions of assessment indicators for a participatory evaluation of management and restoration practices to combat desertification in South Africa.  Paper presented at the 40th Annual Congress of the Grassland Society of Southern Africa (GSSA), Grootfontein Agricultural Development Institute, Middelburg, Eastern Cape, South Africa, 11–15 July.

Kellner, K. & Wepener, J.P. The Dynamics and Rehabilitation of Seriphium Plumosum Encroachment in the Arid and Semi-arid Rangeland of the North-West Province, South Africa.  Paper presented at the 40th Annual Congress of the Grassland Society of Southern Africa (GSSA), Grootfontein Agricultural Development Institute, Middelburg, Eastern Cape, South Africa, 11–15 July.

Boneschans R.B., Malo D.S., Van Rooijen F.S.J. & Kellner, K.  Die evaluering van die kronologiese opvolging en plantdinamika op gerehabiliteerde goudslikmyndamme by Stilfontein, Noordwes Provinsie. Voordrag gelewer by die Suid Afrikaanse Akademie vir Wetenskap en Kuns: Simposium van Biologiese Wetenskappe, Johannesburg, 5 September.

Kong,T, Kellner, K, Els and Y, Westcott, M.  Photo voice for local ecological knowledge and perceptions on restoration and management practices and assessment indicators in the Kalahari. Paper presented at the SER 4th World Conference, Merida, Mexico, 24 August.

2010

Peel, M.J.S., Biggs, H.C., Kirkman, K.P., Jordaan, J.J., Scogings, P.F., Dzuba, L.E., Hardy, M.B., Kellner, K.,Hurt, C.R., Conradie, P.W., Mbatha, K.R., Short, A.D., Van den Berg, L., Du Toit, J.C.O., du Toit, F.J., Zacharias, P.J.K., Goodenough, D.C.W., Vetter, S., Botha. P.R. et al.   Special address: The Grassland Society of Southern Africa – highlights of the strategic plan.  Address presented as session chair at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Coetzee, H., Kellner, K. & Van Rensburg, L.   How to engage communities in semi-arid rangeland management projects.  Poster presented at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Els, Y., Kellner, K. & Lange, C.  The implementation of selected technologies to enhance the restoration of indigenous tree species in the deforested riparian areas in the Mapungubwe National Park, South Africa.  Paper presented at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Lamprecht, A.J.H., Cilliers, S.S., Kellner, K. & Götze, A.R.  A vegetation study of the area leased for mining purposes by Impala Platinum, Rustenburg.  Poster presented at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Westcott, M., Kellner, K. & Berner, J.M.  The evaluation of germination and establishment of three selected grass species used for rehabilitation in four different soil mediums.  Poster presented at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Kellner, K.   Minimum set of impact indicators to assess desertification process on a global scale.  Paper presented at the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Kellner, K.  Veld and pasture management in drought prone regions.  Session chair, for the farmer outreach day during the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

Kellner, K.   Landscape function analysis course discussion.  Session chair, for workshop during the 45th Annual Congress, Grassland Society of Southern Africa (GSSA): sustainable and adaptive practices in range and pastures systems, with an emphasis on arid regions, Kimberley, South Africa, 19–25 July.

2009

Weber, K., Lange, C.A. & Kellner, K.   Desertification processes in Jodhpur district (North-West India). Presentation delivered at the Marburg International Dust and Sand Storm (DSS) Symposium: DSS and desertification, Marburg, Germany, 29–30 September.

2008

Wepener, J.P. & Kellner, K.  The control of Seriphium Plumosum encroachment in certain areas of the Grassland biome in the North-West Province. Paper presented at the 43rd Annual Congress of the Grassland Society of Southern Africa (GSSA), Badplaas, South Africa, 21–25 July.

Els, Y. & Kellner,.K.   The restoration of indigenous tree species.  Paper presented at the 43rd Annual Congress of the Grassland Society of Southern Africa (GSSA), Badplaas, South Africa, 21–25 July.

Morgenthal, T.L. & Kellner, K.  Proposed vegetation survey methodology for fixed site monitoring in South Africa: FIXMOVE.  Paper presented at the 43rd Annual Congress of the Grassland Society of Southern Africa (GSSA), Badplaas, South Africa, 21–25 July.

Kellner, K.  Restoration technologies to improve the grazing capacity of degraded arid- and semi- arid rangelands in South Africa. Paper presented at the XXI International Grassland Congress and VIII International Rangeland Congress, Hohhot, Inner Mongolia, China, 29 June–
5 July.